Disrupted transfer from AS400 to pure-ftpd on Ubuntu

Question

We have an FTP job that runs between an AS400 and pure-ftpd on Ubuntu that's worked for two years. The AS400 (in a remote shop) sends three files.

Recently, it only gets the first of the three done, and then stalls.

AS400 log:

> put foo
229 Extended Passive mode OK (|||45944|)
150 Accepted data connection
226-File successfully transferred
226 [speed data]
Enter an FTP subcommand
> put bar
229 Extended Passive mode OK (|||5743|)
No response from remote host; all connections closed.
Enter an FTP subcommand.
> put baz
You must first open a connection.

pure-ftpd log:

Oct 25 15:59:39 lb-serv3 pure-ftpd: (?@iseries.touro.edu) [INFO] New connection from iseries.touro.edu
Oct 25 15:59:39 lb-serv3 pure-ftpd: (?@iseries.touro.edu) [DEBUG] Command [user] [itload]
Oct 25 15:59:39 lb-serv3 pure-ftpd: (?@iseries.touro.edu) [DEBUG] Command [pass] [<*>]
Oct 25 15:59:39 lb-serv3 pure-ftpd: (?@iseries.touro.edu) [INFO] itload is now logged in
Oct 25 15:59:39 lb-serv3 pure-ftpd: (itload@iseries.touro.edu) [DEBUG] Command [syst] []
Oct 25 15:59:39 lb-serv3 pure-ftpd: (itload@iseries.touro.edu) [DEBUG] Command [epsv] []
Oct 25 15:59:39 lb-serv3 pure-ftpd: (itload@iseries.touro.edu) [DEBUG] Command [stor] [foo]
Oct 25 15:59:39 lb-serv3 pure-ftpd: (itload@iseries.touro.edu) [NOTICE] /path/to//foo uploaded  (4394019 bytes, 32219.83KB/sec)
Oct 25 15:59:39 lb-serv3 pure-ftpd: (itload@iseries.touro.edu) [DEBUG] Command [epsv] []
Oct 25 15:59:39 lb-serv3 pure-ftpd: (itload@iseries.touro.edu) [DEBUG] Command [stor] [bar]

Any wisdom? Many thanks!

EDIT: I forgot to mention that sometimes a zero-length file of the correct name has been created in the correct directory.

@voretaq7 - yeah, seriously. the AS400 shop claims nothing. I can't find any changes in our FTP config. — yitznewton, Oct 25 '11 at 20:57
What about networking changes? Any routers, switches changed recently? If you sniff the network, do you see anything weird? — Ben Pilbrow, Oct 25 '11 at 21:22
How big is the file / how long is the transfer? Is there a firewall in between that may be closing the command channel due to a timeout? — jamesallman, Oct 25 '11 at 21:24
It's supposed to be about 1.5M, smaller than the successfully transferred file — yitznewton, Oct 25 '11 at 21:34

score 1 · Answer 1 · answered Oct 26 '11 at 14:53

1

The AS400 shop altered their script, and that fixed the problem. They are not aware of anything that changed that would have caused the problem. Thanks commenters!

answered Oct 26 '11 at 14:53

yitznewton

121
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Disrupted transfer from AS400 to pure-ftpd on Ubuntu

1 Answers1